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Did i screw myself over? Need help quick.


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#1 Dan Lahav

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Posted 02 June 2005 - 10:04 PM

I recently shot a very dark bar scene with a Aaton LTR54 super16 cam and 7218 stock. I didnt know the shutter angle for exposure so i just set the light meter to 500ASA at 24FPS. How accurate do you think my light meter reading is? Does anyone know the shutter angle of this cam?
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#2 Jon Rosenbloom

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Posted 02 June 2005 - 10:43 PM

7218 can be underexposed a long way, like 4 stops, and you'll still get an image. Moot point, probably ... 99% chance the shutter was 180. Did you shoot a test?
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#3 Dan Lahav

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Posted 02 June 2005 - 11:06 PM

thanks for the reply. nope, no test was shot. I guess i'll have to find out how i did in telecine.

Edited by Dan L, 02 June 2005 - 11:07 PM.

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#4 David Mullen ASC

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Posted 02 June 2005 - 11:13 PM

If you have a light meter than can be set to 24 fps, it will usually assume 180 degress unless you set otherwise, so unless your camera's shutter was set to something other than 180 degrees, you probably exposed correctly.
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#5 Dan Lahav

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Posted 03 June 2005 - 12:13 AM

Thanks so much guys. This newb really appreciates it :D
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#6 Rik Andino

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Posted 03 June 2005 - 02:01 AM

Does anyone know the shutter angle of this cam?

<{POST_SNAPBACK}>


It's 180 degree shutter.

I've got an Aaton LTR54 and it's just like every other Aaton Camera
(Actually the XTRProd has an adjustable shutter but it's usually at 180 degrees)


Why would you think it is otherwise?
Most S16 cameras have 180 degree shutters
Except for the Eclair ACL which has a strange occilating shutter...
(Some CP16 cameras have a bowtie shutter
But when you add that together it's still 180 degrees)

Anyways like other people said
You don't have to worry about overexposing or underexposing 7218
If it's by less than a stop.


Eitherways you're footage will be fine so relax.
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#7 John Pytlak RIP

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Posted 03 June 2005 - 05:55 AM

Cinematographers have found the Kodak VISION2 to have tremendous latitude. Even with one stop underexposure, you'd only see a slight loss of shadow detail. It would take several stops of overexposure to even begin to see any adverse effect on highlight detail.
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#8 Nathan Milford

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Posted 03 June 2005 - 08:36 AM

You absolutly have a 180 degree ceramic shutter. New cameras have 4, 5, 7 and 11 position shutters that can go down to 15 degrees. An LTR54 rarely has that option.
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#9 Brad Grimmett

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Posted 03 June 2005 - 07:04 PM

Cinematographers have found the Kodak VISION2 to have tremendous latitude.  Even with one stop underexposure, you'd only see a slight loss of shadow detail.  It would take several stops of overexposure to even begin to see any adverse effect on highlight detail.

<{POST_SNAPBACK}>


I worked on a feature a couple of months ago where we shot 5274 and 5218 and exposed everything 2 stops under. It's going through a DI, but the dailies held up pretty well. Some of it was pretty dark (too dark in my opinion), but they should be able to bring up what they need to in the DI. When we first started I was pretty scared about underexposing that much (not my choice of course as I was the operator), but both stocks held up very well and I liked the look. I like deep blacks and high contrast though, so others may not like it as much as me.
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